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Finding the Fourth Proportional to 192.47, 288.91 and 188.12

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Solution

The fourth proportional to 192.47, 288.91 and 188.12 is: 282.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.47 : 288.91 = 188.12 : x
  2. Step 2: Convert to fraction form
    192.47/288.91 = 188.12/x
  3. Step 3: Cross multiply
    192.47x = 288.91 × 188.12
  4. Step 4: Simplify right side
    192.47x = 54,349.62
  5. Step 5: Solve for x
    x = 54,349.62/192.47
  6. Step 6: Final answer
    x = 282.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.